A galvanized square tube is a hollow-sized square tube with a square cross-section made of hot-rolled or cold-rolled galvanized steel strips or galvanized sheet coils, which are cold-deformed and processed by a high-frequency welding machine. Square cross-section channel seamless steel pipe. We usually also call the steel pipes made of cold-drawn hollow seamless steel pipes that have been processed in advance and then hot-dip galvanized as galvanized square and rectangular pipes.
Galvanized square tubes are divided into hot-dip galvanized square tubes and cold-dip galvanized square tubes according to the production process.
Hot-dip galvanized square pipe: It is a square steel pipe made of thick steel plates or strips that are rolled, formed, and then welded by electric welding. Under the premise of such a square steel pipe, the square steel pipe is placed in a hot-dip galvanizing pool and undergoes a series of chemical changes. Later, a square steel pipe was formed. The production process of hot-dip galvanized square tubes is relatively simple, the productivity is rather high, and there are not many types, specifications, and models. This type of square steel pipe requires very little equipment and capital and is suitable for small and medium-sized galvanized square pipe manufacturers to produce. But in terms of compressive strength, the strength of this type of seamless steel pipe is much lower than that of thick-walled steel pipes.
Cold-dip galvanized square pipe: Cold-dip galvanized square pipe uses the basic principle of cold spray zinc on the square steel pipe to make the square steel pipe corrosion-resistant. Unlike galvanizing, cold-spray zinc architectural coatings mainly use electrochemical principles to prevent corrosion. Therefore, it is necessary to ensure full contact between zinc powder and materials to form an electrical potential difference. Therefore, the surface treatment of steel is very important.

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